lawnchair/res/drawable/bg_migration_cling.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval" >

    <gradient
        android:endColor="#00ffeb3a"
        android:gradientRadius="50%p"
        android:startColor="#80ffeb3a"
        android:type="radial" />

</shape>